IFAN ASTM All Size Brass Gas Valve

Brass Gas Valve Technical Specifications & Operational Data

Product Definition

Brass gas valves are precision-engineered flow control devices specifically designed for fuel gas applications. These quarter-turn valves feature robust construction with safety-certified components for reliable operation in natural gas and LPG systems.

Material Composition

• Body/Bonnet: CW602N dezincification-resistant brass

• Ball/Stem: CW614N brass with chrome plating

• Seats: PTFE composite with fire-safe design

• Seals: HNBR or FKM elastomers

• Packing: Graphite-impregnated braid

Performance Specifications

Pressure Ratings

• Working pressure: 4 bar (standard)

• Maximum pressure: 10 bar

• Burst pressure: ≥25 bar

• Temperature range: -20°C to 60°C

Flow Characteristics

• Full port design (100% bore)

• Flow coefficient (Cv): 18 (DN25 size)

• Pressure drop: <0.2 bar @ rated flow

Safety Features

• Double O-ring stem seals

• Fire-safe construction (ISO 10497)

• Emergency shut-off capability

• Positive position indicator

Connection Variants

• Threaded:

  • BSPP (parallel)

  • BSPT (tapered)

  • NPT (American standard)

• Flanged:

  • EN 1092-1 PN16

  • ANSI Class 150

• Compression:

  • For soft copper tubing

  • Ferrule-type connection

Quality Standards

• Material Standards:

  • EN 12165 CW602N

  • ASTM B16/B124

• Performance Certifications:

  • DVGW (Germany)

  • AGA (USA)

  • ISO 23553-1

  • CE-PED

Operational Parameters

• Actuation torque: 8-15 Nm

• Cycle life: 20,000+ operations

• Leakage rate: <0.1 bubble/min (seat test)

• Emergency shut-off time: <1 second

Installation Requirements

• Pipe preparation standards

• Thread sealing methods

• Torque specifications:

  • DN15: 25 Nm

  • DN25: 35 Nm

  • DN50: 50 Nm

• Pressure testing protocol

Maintenance Protocol

• Annual operational checks

• 3-year comprehensive inspection

• Seal replacement intervals

• Lubrication requirements

Technical Compliance

• Gas type compatibility

• Installation orientation

• Venting requirements

• Support spacing

Failure Analysis

• Common failure modes

• Mean time between failures

• Wear patterns

• Material degradation

Conclusion

Brass gas valves provide secure, reliable flow control for fuel gas systems through their robust construction and safety-certified design. The dezincification-resistant brass body ensures long-term durability, while the precision-engineered internal components guarantee leak-proof operation. Proper installation following gas industry standards and adherence to maintenance schedules are essential for optimal performance and safety compliance throughout the valve’s service life.

IFAN factory started in 1993. And IFAN has workshop 120000 square meter with 610 staff. IFAN can design and produce all plumbing pipe and fitting include PPR,PVC,CPVC PPSU HDPE PEXA PEXB PERT pipe and fitting ,brass fitting, brass ball valve ,heating system , gas system , sanitary faucets and hose, In the past 30 Years, IFAN has never forgotten his mission-To protect health and safety. And IFAN factory use best materials to produce high quality pipe and fittings with automatic production line and high tech quality control machines. The most important,IFAN can guarantee that all pipes and fittings manufactured by IFAN are qualified. More information pls feel free contact us Whatsapp.